Gator Class A Stimulus Transmitter

Pure spectrum Class A power amplifier

Weighs under 23 pounds

Power amplifier with continuous adjustable power output ± 0.1dB over 32 dB range

Water resistant, rugged 18" x 15" x 6" ABS plastic case

Microprocessor-controlled with front panel soft-keys or remotely controlled with an internal modem for user programmable modulation schemes, power levels, channels, and frequencies.

VSWR antenna protection and internal forward and reverse measurement

Dual cooling fans with built-in thermal overheat protection for amplifier

Battery backed-up SRAM stores all user selectable parameters in the event of a power loss

Powered from 110-240 VAC 50-60 Hz, UL, CSA, CE and FCC approved

CW identifier for FCC CP identification

All parameters can be adjusted remotely via RS-232 or the internal modem or DTMF signaling tones

GENERAL SPECIFICATIONS:
Display	240 X 64 pixel graphic supertwist LCD (VF backlit)
Display	Stability less than 1.5 PPM for first year, + for 1 PPM for aging
Output Power	Continuous adjustable power output + 1.0 dB over > 32 dB range (below 1 GHz)
Power Adjustments	Continuously adjustable via rotary knob or direct keypad entry in 1 dBm increments over > 20 dB on models above 1 GHz
Spurious Output	> 55 dBc (decibels below carrier level)
Harmonics Output	> 55 dBc (decibels below carrier level)
Power	110-240 VAC 50-60 Hz, auto-switching, UL and CSA approved
Power	10 and 20 watt models may also be powered from +12VDC
Remote Control	Via serial RS-232, internal modem or DTMF through telco
Output Power Monitoring	Forward and reverse power monitored via internal power meters. Output is regulated to < +1.0 dB of setting at up to a 6:1 VSWR
MECHANICAL:
Case Size	18" x 15" x 6"
Weight	23 lbs.
GSM GATOR:
Power Output	20 watts into 50 ohms (GSM cellular model)
PA Class	Linear, Class A amplifier
Output Adjustments	+ 0.1 dB steps over 20 dB range to full output
Power Regulation	Internal forward and reverse power meters with built-in circulator
Internal Protection	Infinite VSWR (shuts off at > 6:1 SWR)and temperature protected
Tuning Range	935.2-959.8 MHz
Tuning Increments	+ 50/200 kHz steps via keypad or rotary control
Stability	+ 2.0 PPM from 0 deg to 50 deg C
Type of Modulation	GMSK internal data modulator
Data Rate	270,833 symbols/second
Baseband Filter	Gauss, B x T=0.3
Remote Control	Three ways, modem, DTMF or RS-232-C via rear panel
Display	Graphic 240 x 64 EL backlighted
Power Input	110, 220 VAC, 50-60 Hz or 23-27 VDC at 6 Amps
RF PERFORMANCE:
Frequency Stability	+ 2 ppm from 10 to 50 C
Frequency Steps	+ 200 kHz
Frequency Range	Cellular or PCS models
DIGITAL SPECIFICATIONS:
Data Rate	effective rate 271 kbps (per GSM specs)
Modulation	0.3 GMSK (per GSM specs)
Frame Length	1250 bits
HOST PC SERIAL INTERFACE:
Serial Port	RS-232C
Format	8 data bits
Parity	none
Start/Stop bits	one
MODULATION SCHEMES :
CW	Unmodulated CW signal. Note, GSM data modulation cannot be turned on from the main Gator screen.
External	Transmitter will modulate with user-supplied and filtered I and Q data from an external source. This is via BNC connectors located on the top panel of the Gator.
GSM RND	Gator outputs GSM modulation with internally-generated and random PN (pseudo-random) data.
GSM BUFF	GSM modulation with user-downloadable BCCH (base station control channel) stored data, downloaded by the user with PC loader software. This is via the RS-232C jack in rear. User must supply the base station data to be output, gator will repeat this transmission indefinitely.

110/220 VAC or 24 VDC

110/220 VAC or 12 VDC

Available formats are GSM or IS-136, or 10 and 20 Watt Class A for CW only with > 20 dB power control

Power control > 32 dB on all transmitters below 1 GHz

***Custom frequencies available upon request***

Gator Controller Software

The Gator Controller is a software controller application that allows complete control over BVS' Gator transmitter. The application's interface mimics the top panel to allow Gator users to seemlessly control all of its functions from any PC through the serial cable.

This video covers basic functionality and operation of the Gator/Coyote/Sieve 2.5-2.7 GHz and 3.4 GHz WiMAX Combo.

Download Quicktime (26 MB)

Download Windows Media (30 MB)

Order DVD Here

This video covers basic functionality and operation of the Gator stimulus transmitter.

Download Quicktime (7 MB)

Download Windows Media (5 MB)

Request Demo DVD

U.S. addresses only

2500-2700 MHz (8.5 dBi gain)

Mag-Mount Antenna (perfect for drive studies)

Forecaster PC software allows Gator and compatible receivers such as Coyote to overlay all drive-study measurements for overall RF coverage.

Why won't my Gator turn on when I hook it up to a gas portable generator? Certain model generators output an impure noise spike in the AC output. This anomaly has been traced to ignition noise riding on top of the sine waveform. So while this output is fine for most devices requiring AC power, the Gator will not turn on because it requires pure regulated AC power. Several model Honda generators have been tested and approved for this application, and also this problem can be easily remedied by simply using an inexpensive AC surge suppressor found in any convenience or hardware store. Does Gator transmit a complete CDMA signal? No, not really. The Crocodile is Berkeley's premium CDMA stimulus transmitter. It has been designed to fit in between existing base stations using any available PN offset, without effecting normal operation of the other base stations. It outputs Pilot I & Q signals used for measuring correlated signal strength and includes all timing and clocking circuits to meet IS-97A requirements, including clock holdover in excess of 24 hours in the absence of GPS signals. How do I control the Gator once it is up on the crane? All of the Gator's necessary functions may be controlled via any touch-tone telephone line, a cellular phone or from any PC that has Gator Controller software installed. Every Gator is equipped with an internal RS-232C and Bell 202 modems to control all functions from any PC with supplied software.

HOME
Company	Sales	Products	Support	News
About Us	Domestic	Accessories	Training	Press Releases
Contact Us	International	Videos	Workshops	Offers
Directions	Request Information	Services	Returns (RMA)	Events
Employment	Customer Testimonials	Warranty	Calibrations	Links